CN100587475C - Jet fuel silver slice corrosion microwave rapid detecting method - Google Patents
Jet fuel silver slice corrosion microwave rapid detecting method Download PDFInfo
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- CN100587475C CN100587475C CN200410065506A CN200410065506A CN100587475C CN 100587475 C CN100587475 C CN 100587475C CN 200410065506 A CN200410065506 A CN 200410065506A CN 200410065506 A CN200410065506 A CN 200410065506A CN 100587475 C CN100587475 C CN 100587475C
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- jet fuel
- corrosion
- silver
- microwave
- detecting method
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Abstract
Main technical scheme is as following: after being burnished, silver piece is placed in reaction system composed of jet fuel and polar sensitizer; then, placing the silver piece and the reaction system to microwave heating equipment for reaction about 5-30 minites; taking out the silver piece, the method determines corrosion value of jet fuel based on corrosion color of the silver piece. Advantages are: short testing time, good repeatability and reproducibility of test result.
Description
Affiliated technical field
The invention relates to jet fuel silver slice corrosion test rapid assay methods.
Background technology
In recent years, it is more outstanding that China's jet fuel silver slice corrosion is tested defective problem, not only causes the processing that degrades of large quantities of jet fuels, brought enormous economic loss, returning flight and having brought potential safety hazard.Press jet fuel silver slice corrosion test method(s) standard (SH/T0023-91) regulation, silver strip corrosion test is directly to contact 4 hours with the silver strip polishing and with sample under test temperature is 50 ℃ condition, judges its corrosion level with silver strip surface corrosion color then.Silver strip corrosion test is whether to contain the condition test that the metal silver strip is produced the active sulfide of corrosive attack in the qualitative detection jet fuel.In order to ensure flight safety, require its corrosion level to be not more than 1 grade.
Summary of the invention
The purpose of this invention is to provide a kind of silver strip corrosion test rapid assay methods, shorten test period as far as possible, to improve jet fuel quality assurance level.
The present invention realizes with following technical scheme: microwave is a kind of electromagnetic wave from low frequency radio wave to the high frequency-infrared district, its frequency range is 300MHz-30GHz, being used for heating, to have a programming rate fast, efficiency of heating surface height, homogeneous heating, be easy to make various polar solvent heating such as polar liquid such as water, ethanol etc., make the atom and the molecule generation vibration at high speed of material, for chemical reaction creates more favourable thermodynamic condition.The present invention has utilized these characteristics of microwave heating just, silver strip is placed microwave device, accelerate the corrosion reaction of oil sample to silver strip, thereby reach the purpose of fast detecting, concrete grammar is: earlier the silver strip polishing is placed in the reaction system of being made up of jet fuel oil sample and polarity sensitizer, then silver strip and reaction system are put into microwave heating equipment, added thermal response 5～30 minutes, take out the corrosion level of back according to silver slice corrosion color judgement jet fuel, the volume of described reaction system is 10～300mL.
The jet fuel oil sample in the described reaction system and the consumption of polarity sensitizer are: oil sample volume 10～300mL, sensitizer consumption are 5.0～40mL.
Described sensitizer is a kind of in methyl alcohol, ethanol, n-propanol, isopropyl alcohol, chloroform, normal butyl alcohol, n-amyl alcohol, ethylene glycol, diglycol, triethylene-glycol, butanone, methyl-n-butyl ketone, formic acid, acetate, propionic acid, positive valeric acid, methyl formate, acetate acetate, n-butyl acetate, nitromethane, ethylene glycol methyl esters, the ethyl glycol or their potpourri.
Described microwave heating power is 300～1500W.
The invention has the beneficial effects as follows:, accelerated the reaction of silver strip and oil sample, thereby reached the effect of fast detecting owing to adopted microwave heating technique.Compare with conventional method, shortened to from more than 5 hours detection time and be less than 40 minutes.
Through test, testing result has better repeatability and repeatability, and has reduced the test oil amount.Comparison of test results is as follows:
Microwave promotes silver slice corrosion accelerated test procedures and standard test method contrast
Microwave promotes the corrosion level of silver slice corrosion accelerated test procedures evaluation oil sample, and to 0～4 grade of oil sample, corrosion test result is consistent with standard test method, and test findings has better repeatability and repeatability.Microwave promotes the silver slice corrosion accelerated test procedures to compare with the SH/T0023-91 test method, has simple to operately, grasps easily, and has reduced the test oil amount, and test period reduces greatly, has reduced laboratory personnel's workload.
Embodiment
Further illustrate effect of the present invention by the following examples.
The Galanz micro-wave oven of reequiping is adopted in this experiment.The microwave peak power output is 800W, and the effect frequency is 2450MHz, and microwave radiation inner cavity size 200mm * 330mm * 330mm, inner chamber capacity are 23L." the high firepower " of this micro-wave oven is 100% firepower, and output power is peak power 800W, and " middle firepower " is 81% firepower, and output power is 648W, and " low firepower " is 58% firepower, and output power is 464W.
Exist various heating mode to act on simultaneously in the microwave oven cavity, energy distribution is inhomogeneous, and add reagent and also can the distribution of microwave energy be impacted, for reducing error to greatest extent, each test heating container all is placed on same position, and is allowed to condition on the pallet and rotates.
In order to make short-time test result and standard test method have comparability, this experiment adopts DSY-020 type sheet metal analyzer to do contrast test.Used test material and required reagent are as follows:
1, material
1. glass supporter: be used for sample and lay silver strip.
2. test piece anchor clamps: do not damage its corner in order to clamp silver strip.The anchor clamps of available GB/T5096 defined.
3. thermometer: 0～200 ℃, 1 ℃ of scale division value.
4. graduated cylinder: 250mL, 50mL, 10mL.
5. silver strip: No. 2 silver, purity is greater than 99.9%.
6. antimagnetic type tweezer.
7. polishing material: 150 orders, 240 purpose silit fine sandpapers, medicinal absorbent cotton.
2, reagent:
1. isooctane: analyze pure.
2. a kind of in methyl alcohol, ethanol, n-propanol, isopropyl alcohol, chloroform, normal butyl alcohol, n-amyl alcohol, ethylene glycol, diglycol, triethylene-glycol, butanone, methyl-n-butyl ketone, formic acid, acetate, propionic acid, positive valeric acid, methyl formate, acetate acetate, n-butyl acetate, nitromethane, ethylene glycol methyl esters, the ethyl glycol or their potpourri, agents useful for same be analyze pure.
Embodiment 1:
(1) test condition
Oil sample volume 10mL, sensitizer consumption 5.0mL, 5 minutes reaction time.
(2) test findings
Embodiment 2:
(1) test condition
Oil sample volume 150mL, sensitizer consumption 20mL, 10 minutes reaction time.
(2) test findings
Embodiment 3:
(1) test condition
Oil sample volume 300mL, sensitizer consumption 40mL, 30 minutes reaction time.
(2) test findings
Claims (3)
1, a kind of jet fuel silver slice corrosion microwave rapid detecting method, it is characterized in that carrying out as follows: earlier the silver strip polishing is placed in the reaction system of being made up of jet fuel oil sample and polarity sensitizer, then silver strip and reaction system are put into microwave heating equipment and added thermal response 5～30 minutes, take out jet fuel is judged in the back according to the silver slice corrosion color corrosion level, oil sample volume in the described reaction system is 10～300mL, and the sensitizer consumption is 5.0～40mL.
2, a kind of jet fuel silver slice corrosion microwave rapid detecting method according to claim 1 is characterized in that described polarity sensitizer is a kind of in ethylene glycol, diglycol, triethylene-glycol, ethylene glycol methyl esters, the ethyl glycol or their potpourri.
3, a kind of jet fuel silver slice corrosion microwave rapid detecting method according to claim 1 is characterized in that described microwave heating power is 300～1500W.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200410065506A CN100587475C (en) | 2004-11-17 | 2004-11-17 | Jet fuel silver slice corrosion microwave rapid detecting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200410065506A CN100587475C (en) | 2004-11-17 | 2004-11-17 | Jet fuel silver slice corrosion microwave rapid detecting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1776406A CN1776406A (en) | 2006-05-24 |
| CN100587475C true CN100587475C (en) | 2010-02-03 |
Family
ID=36766038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200410065506A Expired - Fee Related CN100587475C (en) | 2004-11-17 | 2004-11-17 | Jet fuel silver slice corrosion microwave rapid detecting method |
Country Status (1)
| Country | Link |
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| CN (1) | CN100587475C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102419293B (en) * | 2011-08-30 | 2013-05-08 | 中国石油化工股份有限公司 | Method for rapidly detecting corrosivity of chemicals by microwave radiation |
-
2004
- 2004-11-17 CN CN200410065506A patent/CN100587475C/en not_active Expired - Fee Related
Non-Patent Citations (4)
| Title |
|---|
| 喷气燃料银片腐蚀快速测定方法的研究. 王立光，何滔，张祁.腐蚀与防护，第21卷第5期. 2000 |
| 喷气燃料银片腐蚀快速测定方法的研究. 王立光，何滔，张祁.腐蚀与防护，第21卷第5期. 2000 * |
| 微波加热在化学反应中的应用进展. 杨伯伦，贺拥军.现代化工，第21卷第4期. 2001 |
| 微波加热在化学反应中的应用进展. 杨伯伦，贺拥军.现代化工，第21卷第4期. 2001 * |
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| Publication number | Publication date |
|---|---|
| CN1776406A (en) | 2006-05-24 |
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Granted publication date: 20100203 Termination date: 20171117 |